The Customer Requirements are always hazy. Although the Customer may think he Knows What he Wants, he Doesn’t have the Technical or Engineering Specifications of Communicating exactly What he Wants. This conversion of Customer Requirements into Technical or Engineering Specifications is the job of this tool 

Brainstorming is an idea generation technique. It is a group event. It helps you generate large number of ideas in limited time. It seeks inputs from the subject matter experts and participants who are impacted by the issue or the result. This tool, though simple, is one of the most significant tools that always yields explicit results.